Update TreeView data

Questions & Answers
1

Hello. I create UI TreeView using my classes for this and and using TreeView API for create custom inspector window (MultiColumnTreeView). But when i use custom window for adding new elements on treeView, that Treeview in custom window don’t showing it. I know that i should use method Reload(); or Repaint();, but it don’t working. What should i doing for solve this problem?

Here my structure of treeView in TreeViewCreater script:
[99006-treeviewcreater.png*_|99006]

Here showing this structure in custom window:
[99007-multicolumntreeview.png*_|99007]

Added element i can see their in TreeViewCreater script, but not in window. If I reload my window(close and again open), than elements are showing.

Here I get data from script:

    public static List<MultiColumnTreeElement> GenerateTreeFromList()
    {
        var treeViewCreater = GameObject.Find("Canvas").GetComponent("TreeViewCreater");
        var treeNodeList = (treeViewCreater as TreeViewCreater).TreeNodeList;

        var treeElements = new List<MultiColumnTreeElement>(1);
        treeElements.Clear();

        IDCounter = 0;
        var root = new MultiColumnTreeElement("Root", -1, IDCounter, "root");
        treeElements.Add(root);

        for (int i = 0; i < treeNodeList.Count; i++)
        {
            var newNode = new MultiColumnTreeElement( /*"element " + i*/ treeNodeList_.Name, root.depth + 1, ++IDCounter /*IDCounter*/, treeNodeList*.Text);*_

treeElements.Add(newNode);

CreateTreeFromListTreeView(newNode, treeNodeList*.Children, treeElements);*
}
return treeElements;
}

static void CreateTreeFromListTreeView(TreeElement element, List<TreeViewCreater.TreeNode> treeNodeList, List treeElements )
{
for (int i = 0; i < treeNodeList.Count; i++)
{
var node = new MultiColumnTreeElement(treeNodeList_.Name, element.depth + 1, ++IDCounter /* ++IDCounter*/, treeNodeList*.Text);*
treeElements.Add(node);_

CreateTreeFromListTreeView(node, treeNodeList*.Children, treeElements);*
}
Here my BuildRows:
protected override IList BuildRows(TreeViewItem root)
{
var rows = base.BuildRows(root);
return rows;
}
Base BuildRows:
* protected override IList BuildRows (TreeViewItem root)*
* {*
* if (m_TreeModel.root == null)
_ {
Debug.LogError (“tree model root is null. did you call SetData()?”);
}*_

* m_Rows.Clear ();
_ if (!string.IsNullOrEmpty(searchString))
{_
Search (m_TreeModel.root, searchString, m_Rows);
_ }
else*
* {_
if (m_TreeModel.root.hasChildren)
AddChildrenRecursive(m_TreeModel.root, 0, m_Rows);
_ }*_

* // We still need to setup the child parent information for the rows since this*
* // information is used by the TreeView internal logic (navigation, dragging etc)*
* SetupParentsAndChildrenFromDepths (root, m_Rows);*

* return m_Rows;
_ }
Thank you.

_*

2

I use TreeModel class for creating MultiColumnTreeView because should get new data and after it set update(reload();).
I mean this:

m_TreeView.treeModel.SetData(GetData());

m_TreeView.Reload();

For example:

            if (GUILayout.Button("Add element", style))
            {
                var selections = treeView.GetSelection();

                var treeViewCreater = GameObject.Find("Canvas").GetComponent("TreeViewCreater");
                var treeNodeList = (treeViewCreater as TreeViewCreater).TreeNodeList;

                if(selections != null && selections.Count > 0)
                {
                    foreach (var selection in selections)
                    {
                        var element = treeView.treeModel.Find(selection);
                        
                        if(element != null)
                            searchTreeNodeOfListAndAdd(element, treeNodeList);

                        //element.Children.Add(new MultiColumnTreeElement("new element", element.depth +1, 1, "HI"));
                    }
                }
                else
                {
                    treeNodeList.Add(new TreeViewCreater.TreeNode("root", "root element", 0));
                }


                m_TreeView.treeModel.SetData(GetData());
                m_TreeView.Reload();

            }